CN220401953U - Speaker module and electronic equipment - Google Patents

Abstract

The application discloses speaker module and electronic equipment, including module shell, speaker subassembly and electromagnetic drive subassembly. The module housing has a receiving cavity therein. The speaker assembly is movably arranged in the accommodating cavity, and the speaker assembly comprises a magnetic circuit structure. The electromagnetic driving assembly is arranged in the accommodating cavity and is used for attracting or repelling the magnetic circuit structure so as to drive the loudspeaker assembly to reciprocate in the accommodating cavity through the magnetic circuit structure. The speaker module in this application, the magnetic field force drive speaker subassembly that produces through electromagnetic drive subassembly holds intracavity reciprocating motion to form the vibration effect of similar vibrating motor, make speaker and these two functional element of vibrating motor combine into one, compare the shared overall arrangement space of speaker and vibrating motor that sets up alone, the shared overall arrangement space of speaker module in this application is less relatively, more is convenient for assemble inside electronic equipment.

Description

Speaker module and electronic equipment

Technical Field

The present disclosure relates to the field of speakers, and more particularly, to a speaker module capable of vibrating and an electronic device.

Background

Along with the continuous increase of the functions of the smart phone, the number of various functional elements is increased, the space inside the smart phone is limited, and the layout of the elements is more and more stressed. Typically, the speaker and vibration motor are located in the lower portion of the phone inside the phone and are also adjacent to the charging port. Since the charging port is generally located in the middle of the lower portion of the handset, less space is left for the speaker and vibration motor to adjust its position. In addition, the charging port, the speaker, and the wiring circuit of the vibration motor and the respective mounting structures also occupy space, which further makes the lower layout space of the cellular phone more crowded, and it is difficult to properly assemble the speaker and the vibration motor.

Therefore, how to optimize the structures of the speaker and the vibration motor and reduce the layout space occupied by them inside the mobile phone, so that the speaker and the vibration motor can be conveniently assembled inside the mobile phone, becomes one of the problems to be solved in the industry.

Disclosure of Invention

The application provides a speaker module and electronic equipment, is used for producing magnetic field force through increasing electromagnetic drive subassembly for this speaker module and drives speaker subassembly and hold intracavity reciprocating motion, has produced the vibration effect of similar vibrating motor for this speaker subassembly itself has two functions of sound production and vibration. Therefore, the layout space occupied by additionally installing the vibration motor can be saved, and the loudspeaker module can be conveniently assembled in the electronic equipment.

In a first aspect, the present application provides a speaker module including a module housing, a speaker assembly, and an electromagnetic drive assembly.

The module housing has a receiving cavity therein.

The speaker assembly is movably arranged in the accommodating cavity, and the speaker assembly comprises a magnetic circuit structure.

The electromagnetic driving assembly is arranged in the accommodating cavity and is used for attracting or repelling the magnetic circuit structure so as to drive the loudspeaker assembly to reciprocate in the accommodating cavity through the magnetic circuit structure.

The utility model provides a speaker module arranges electromagnetic drive subassembly around speaker subassembly, and the magnetic field force drive speaker subassembly that produces through electromagnetic drive subassembly holds intracavity reciprocating motion to form the vibration effect of similar vibrating motor, make speaker and these two functional elements of vibrating motor combine into one, compare and set up speaker and the shared overall arrangement space of vibrating motor alone, the shared overall arrangement space of speaker module in this application is less relatively, makes speaker module can conveniently assemble inside electronic equipment.

In addition, the loudspeaker module with the vibration function in this application is in order to realize through whole speaker subassembly in holding intracavity reciprocating motion when carrying out the vibration function, consequently whole speaker subassembly has constituted the vibrating rotor, and the mass of the vibrating rotor that constitutes by whole speaker subassembly is great in the vibration motor among the correlation technique, and then makes the speaker subassembly show when reciprocating motion that the vibration inertial force is great, and the sense of vibration of exerting on the module shell is stronger for the user experience when feeling the vibration sense of touch of module has obtained the promotion.

In one possible design, the electromagnetic driving assembly includes a first electromagnetic coil, a movable space is provided between two sides of the magnetic circuit structure and the module housing, and at least one first electromagnetic coil is disposed in the movable space.

Optionally, a first electromagnetic coil is located in the movable space on one side of the magnetic circuit structure, and an elastic piece is arranged in the movable space on the other side of the magnetic circuit structure and connects the magnetic circuit structure with the cavity wall of the accommodating cavity, and the elastic piece can provide a reset acting force of the magnetic circuit structure.

In one possible design, at least one first electromagnetic coil is respectively arranged in the movable space at two sides of the magnetic circuit structure.

First solenoid is established to the equipartition in the activity space of magnetic circuit both sides, can make the first solenoid of both sides attract and repel magnetic circuit simultaneously for magnetic circuit receives the effect of the first solenoid magnetic field force of both sides simultaneously, and then can correspond vibration command more fast.

In one possible design, the electromagnetic drive assembly further includes a first core disposed through an interior of the first electromagnetic coil.

The first iron core not only can strengthen the magnetic field intensity of the first electromagnetic coil, but also can conveniently strengthen the first electromagnetic coil, so that the first electromagnetic coil can be prevented from deflecting towards the direction of the magnetic circuit structure under the action of magnetic field force.

In one possible design, the speaker assembly is slidably connected to the chamber wall of the receiving chamber by a guide assembly in the direction of reciprocation.

The loudspeaker component can be enabled to be more stable in reciprocating motion, and vibration touch feeling is prevented from being influenced by swinging and deflection to other directions.

In one possible design, the guide assembly includes a guide shaft and a shaft hole, the guide shaft being fixed to one of the speaker assembly and a chamber wall of the receiving chamber, the other of the two being provided with the shaft hole.

Optionally, lubricating oil can be filled in a gap between the guide shaft and the shaft hole, so that friction resistance when the guide shaft slides in the shaft hole can be reduced.

Optionally, the outer wall of the guide shaft and/or the hole wall of the shaft hole are coated with a self-lubricating material.

Specifically, engineering plastics such as polytetrafluoroethylene, polyacetal, polyoxymethylene, polycarbonate, polyamide, etc. may be used as the self-lubricating material; electroplated alloy layers may also be employed.

In one possible design, the guide shaft is fixed to one of the magnetic circuit structure and the cavity wall of the accommodating cavity, and the shaft hole is provided to the other of the two.

Alternatively, the shaft hole is provided on the cavity wall of the accommodating cavity may be formed by various embodiments: one is to fix a shaft sleeve or a linear bearing on the cavity wall of the accommodating cavity, wherein the shaft sleeve or the linear bearing is provided with a shaft hole for penetrating the guide shaft; the other is that a boss is formed on the cavity wall of the accommodating cavity in an extending way, and a shaft hole is formed on the boss.

In one possible design, the speaker assembly further includes a magnetic conductive sheet fixed to the magnetic circuit structure, one of the magnetic conductive sheet and the chamber wall of the accommodating chamber is fixed with the guide shaft, and the other is provided with the shaft hole.

In one possible design, the guide assembly comprises a slider fixed to one of the speaker assembly and the chamber wall of the receiving chamber, and a chute provided in the other of the two.

Optionally, lubricating oil can be filled in a gap between the sliding block and the sliding groove, so that friction resistance of the sliding block during sliding in the sliding groove can be reduced.

Optionally, the outer wall of the slide block and/or the groove wall of the slide groove are coated with self-lubricating materials.

In one possible design, the slider is fixed to one of the magnetic structure and the cavity wall of the receiving cavity, the other of the two being provided with the chute.

In one possible design, the speaker assembly further includes a magnetic conductive sheet fixed to the magnetic circuit structure, one of the magnetic conductive sheet and the cavity wall of the accommodating cavity is fixed with the slider, and the other of the magnetic conductive sheet and the cavity wall is provided with the sliding groove.

In one possible design, the magnetic circuit structure comprises a central permanent magnet, two oppositely arranged first permanent magnets for arranging the guiding assembly, and two oppositely arranged second permanent magnets for being attracted or repelled by the electromagnetic drive assembly.

In one possible design, the electromagnetic drive assembly includes a second electromagnetic coil, a plurality of the second electromagnetic coils being located at the bottom of the magnetic circuit structure and adjacent to both side edges of the magnetic circuit structure.

In one possible design, the electromagnetic driving assembly further includes a second iron core penetrating through the second electromagnetic coil, and a separation gap is formed between the second iron core and the magnetic circuit structure.

The second iron core not only can strengthen the magnetic field intensity of the second electromagnetic coil, but also can conveniently strengthen the second electromagnetic coil, so that the second electromagnetic coil can be prevented from deflecting towards the direction of the magnetic circuit structure under the action of magnetic field force.

The separation gap has two functions; firstly, the magnetic circuit structure is prevented from contacting the second iron core, and the second iron core is prevented from being magnetized by the magnetic circuit structure; and secondly, friction obstruction of the second iron core to the magnetic circuit structure during reciprocating motion is prevented.

In one possible design, a plurality of the second electromagnetic coils are arranged symmetrically to each other about a center line of the module case.

The second electromagnetic coil can generate relatively balanced magnetic field force, and the loudspeaker component is prevented from deflecting to any side.

In one possible design, the speaker assembly further includes a voice coil, the voice coil and the electromagnetic drive assembly being disposed on a flexible circuit board that extends through the module housing.

The voice coil and the electromagnetic coil are integrated on the flexible circuit board, so that the layout space occupied by the circuit can be reduced, and the layout space occupied by the loudspeaker module is further reduced.

In one possible design, the first electromagnetic coils on both sides of the magnetic circuit structure are arranged symmetrically to each other about the center line of the module housing.

The first electromagnetic coils on two sides can generate relatively balanced magnetic field force, and the loudspeaker assembly is prevented from deflecting to any side.

In a second aspect, the application further provides an electronic device, including a housing and the speaker module, where the speaker module is disposed in the housing.

The electronic equipment in this application has foretell speaker module, and this speaker module has electromagnetic drive subassembly, and the magnetic field force drive speaker subassembly that produces through electromagnetic drive subassembly holds intracavity reciprocating motion to form the vibration effect of similar vibrating motor, make speaker and these two functional elements of vibrating motor can combine into one, thereby can save vibrating motor in electronic equipment. Therefore, compared with the layout space occupied by the independent setting of the loudspeaker and the vibration motor, the layout space occupied by the loudspeaker module is relatively smaller, so that the loudspeaker module can be conveniently assembled inside the electronic equipment.

In addition, the electronic equipment in this application, because whole speaker subassembly has constituted the vibration active cell, compare the vibrating motor among the related art, the mass of the vibration active cell that constitutes by whole speaker subassembly is great, and then makes the speaker subassembly show when reciprocating motion that the vibration inertial force is great, and the sense of vibration of applying on the module shell is stronger for the user feel better when feeling electronic equipment vibration.

Drawings

Fig. 1 is a schematic front view of a smart phone according to an embodiment of the present application;

fig. 2 is a schematic back view of a smart phone according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a speaker module according to an embodiment of the present disclosure;

fig. 4 is an exploded view of a speaker module provided in an embodiment of the present application;

FIG. 5 is a cross-sectional view of an example of A-A in FIG. 3;

fig. 6 is a schematic view of the speaker assembly of fig. 5 as it reciprocates within the receiving chamber;

FIG. 7 is a cross-sectional view of another example of A-A of FIG. 3;

FIG. 8 is a cross-sectional view of another example of A-A of FIG. 3;

FIG. 9 is a cross-sectional view of another example of A-A of FIG. 3;

FIG. 10 is a cross-sectional view of another example of A-A of FIG. 3;

FIG. 11 is a cross-sectional view of another example of A-A of FIG. 3;

fig. 12 is a schematic view of a magnetic circuit structure, a first electromagnetic coil, and a second electromagnetic coil provided in an embodiment of the present application;

FIG. 13 is a cross-sectional view of B-B of FIG. 12;

FIG. 14 is a schematic view of an example of a guide assembly provided in an embodiment of the present application;

FIG. 15 is a schematic view of another example of a guide assembly provided in an embodiment of the present application;

FIG. 16 is a schematic view of another example of a guide assembly provided in an embodiment of the present application;

fig. 17 is a schematic view of another example of a guide assembly according to an embodiment of the present disclosure.

Reference numerals:

10. a module housing; 11. a first housing; 12. a second housing; 13. a receiving chamber;

20. a speaker assembly; 21. a magnetic circuit structure; 211. a center permanent magnet; 212. a first permanent magnet; 213. a second permanent magnet; 22. a voice coil; 23. magnetic conductive sheets; 24. a vibrating diaphragm; 25. a vibrating diaphragm bracket; 26. a connecting sheet;

30. an electromagnetic drive assembly; 31. a first electromagnetic coil; 32. a first iron core; 33. a second electromagnetic coil; 34. a second iron core; 341. a separation gap;

40. a guide assembly; 41. a guide shaft; 42. a shaft hole; 43. a slide block; 44. a chute; 45. a shaft sleeve; 50. a center line;

100. a speaker module; 200. a housing; 201. a rear cover; 202. a middle frame; 300. and a display screen.

Detailed Description

The following is an exemplary description of relevant content that may be relevant to embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present application, it should be understood that the terms "upper," "lower," "side," "inner," "outer," "top," "bottom," and the like indicate an orientation or positional relationship based on installation, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.

It should be further noted that, in the embodiments of the present application, the same reference numerals denote the same components or the same parts, and for the same parts in the embodiments of the present application, reference numerals may be given to only one of the parts or the parts in the drawings by way of example, and it should be understood that, for other same parts or parts, the reference numerals are equally applicable.

In the description of the present application, it should be noted that the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone.

Along with the continuous increase of the functions of the smart phone, the number of various functional elements is also increased, and the layout space inside the smart phone is also more and more tensioned. Smartphones typically have two indispensable functional elements, a speaker for emitting sound and a vibration motor for generating a vibrating touch feeling to the phone.

Among them, a speaker, also called a horn or an audio unit, is a commonly used electroacoustic transducer device. The main working principle of the loudspeaker is that the vibrating diaphragm is driven by the electrifying element to generate mechanical vibration and push surrounding air to make air medium generate fluctuation so as to realize the conversion of electricity, force and sound.

The speakers may be classified into moving coil type speakers, moving iron type speakers, coil iron hybrid type speakers, electromagnetic type speakers, inductance type speakers, electrostatic type speakers, planar type speakers, ribbon type speakers, flat magnetic type speakers, and the like.

Vibration motors are generally classified as either rotor motors or linear motors. The vibration motor may generate a vibration touch to give information prompt and operation feedback to the user. For example, the vibration motor can be used for vibration prompt of incoming call, vibration prompt under scenes such as time prompt, receiving information, alarm clock and the like, and touch operation feedback such as photographing, audio playing and the like.

In general, the layout positions of the speaker and the vibration motor inside the cellular phone are located in the lower space of the cellular phone, and are also arranged adjacent to the charging port. Because the charging port is usually located in the middle of the lower part of the mobile phone and the position is basically fixed, the opportunity for the speaker and the vibration motor to perform position adjustment is less, so that the lower layout space of the mobile phone becomes a main battlefield for the speaker and the vibration motor to compete for the layout position. In addition, the charging port, the loudspeaker and the wiring circuit of the vibration motor and the installation structure thereof occupy space, so that the lower layout space of the mobile phone is more compact, and the loudspeaker and the vibration motor are difficult to assemble.

Therefore, how to optimize the structures of the speaker and the vibration motor, so that the layout space occupied by the speaker and the vibration motor can be reduced, so that the speaker and the vibration motor can be conveniently assembled inside the mobile phone, which is one of the problems to be solved in the industry.

In view of this, this embodiment of the application provides a speaker module and electronic equipment, is used for producing magnetic field force through increasing electromagnetic drive subassembly to drive speaker subassembly can be at holding intracavity reciprocating motion, in order to produce the vibration effect of similar vibrating motor, make this one functional element of speaker subassembly have two functions of sound production and vibration, thereby can save the required overall arrangement space that occupies of separately installing vibrating motor additional, make speaker module in this embodiment of the application inside the cell-phone occupy the overall arrangement space less, more be convenient for assemble.

The embodiment of the application provides an electronic device, which can also be called a mobile device, a terminal device mobile terminal or a terminal. Including but not limited to a handheld device, an in-vehicle device, a wearable device, a computing device, or other processing device connected to a wireless modem. For example, the electronic devices may include smart watches (smart watches), smart handbands (smart phones), smart phones (smart phones), headsets (earpads), personal digital assistants (personal digital assistant, PDA) computers, tablet computers, laptop computers (lapop computers), car computers, smart glasses (smart glasses), pedometers (pedometers), interphones (two way radio), and other electronic devices having speakers and vibration motors and requiring a miniaturized design of both.

In order to more conveniently illustrate the electronic device provided in the embodiments of the present application, by way of example, but not by way of limitation, the technical solution of the present application will be described in detail below by taking the electronic device as an example of a smart phone. Fig. 1 is a schematic front view of a smart phone according to an embodiment of the present application. Fig. 2 is a schematic back view of a smart phone according to an embodiment of the present application.

As shown in fig. 1 and 2, the smart phone provided in the embodiment of the present application includes a display 300 and a housing 200, where the housing 200 further includes a middle frame 202 and a rear cover 201. The middle frame 202 is in a hollow ring-shaped structure, the front end surface of the middle frame 202 is fixedly provided with a display screen 300, and the rear end surface of the middle frame 202 is fixedly provided with a rear cover 201. The display 300, the middle frame 202 and the rear cover 201 together define a smart phone accommodating space for installing various functional elements of the smart phone, such as the speaker module 100 and other functional elements such as a battery, a microphone and a processor in the embodiment described below.

In the embodiment of the present application, the cross-sectional shape of the middle frame 202 (corresponding to the shapes of the display screen 300 and the rear cover 201) is rectangular, square, racetrack-shaped, oval, or the like. The middle frame 202 provides mechanical support and protection for the whole smart phone, and the middle frame 202 is made of a material with enough hardness, and the material constituting the middle frame 202 can be stainless steel, ceramic, titanium alloy, aluminum alloy, copper alloy or hard plastic.

The rear cover 201 is covered on the rear end surface of the middle frame 202, and the rear cover 201 can be made of stainless steel, titanium alloy, glass, ceramics, aluminum alloy, copper alloy, plastics and other materials.

Optionally, the rear cover 201 may be covered on the middle frame 202 by screwing, clamping, bonding, etc., and a sealing ring may be disposed between the rear cover 201 and the middle frame 202, so as to improve the sealing and waterproof effects at the joint of the rear cover 201 and the middle frame 202. The seal ring may be formed of a highly elastic material such as silicone or rubber.

In addition, the smart phone may further include: processor, universal serial bus (universal serial bus, USB) interface, charge management module, power management module, battery, microphone, mobile communication module, antenna, wireless communication module, audio module, earphone interface, sensor module, keys, camera, user identification module (subscriber identificationmodule, SIM) card interface, etc.

These functional elements may be modified according to the needs of the user, and it is to be understood that the specific embodiment described above is only one specific implementation of the present application, and other ways that may implement the solution of the present application are also the scope of protection of the present application, which is not described herein.

The speaker module 100 provided in the present application will now be described in detail with reference to the accompanying drawings.

Fig. 3 is a schematic diagram of a speaker module 100 according to an embodiment of the present application. Fig. 4 is an exploded view of the speaker module 100 according to the embodiment of the present application. Fig. 5 is a cross-sectional view of an example of A-A in fig. 3.

As shown in fig. 3-5, a speaker module 100 according to an embodiment of the present application includes a module housing 10, a speaker assembly 20, and an electromagnetic driving assembly 30.

The module housing 10 is formed by splicing and assembling a first housing 11 and a second housing 12 which are in a semi-closed structure, and the inner cavities of the first housing 11 and the second housing 12 jointly form a containing cavity 13 of the module housing 10, wherein the containing cavity 13 is used for providing installation space for the loudspeaker assembly 20 and the electromagnetic driving assembly 30. In addition, a part of the space of the accommodating chamber 13 also serves as a front sound chamber and a rear sound chamber of the speaker assembly 20, and more specifically, the electromagnetic drive assembly 30 is disposed in the rear sound chamber of the speaker assembly 20.

The loudspeaker assembly 20 mainly comprises a magnetic circuit structure 21, a voice coil 22, a diaphragm 24, a diaphragm bracket 25 and other components. The magnetic circuit structure 21 is used to generate a constant magnetic field, and the constant magnetic field refers to a magnetic field generated by the magnetic circuit structure 21, wherein the field strength at any position does not change with time. The voice coil 22 is disposed in the constant magnetic field, and when the voice coil 22 is supplied with the current decoded by the audio signal, the voice coil 22 generates regular motion due to lorentz force in the magnetic field, and as the diaphragm 24 is connected with the voice coil 22, the diaphragm 24 is driven to vibrate in the accommodating cavity 13 along with the regular motion of the voice coil 22, and the air in the accommodating cavity 13 is pushed to radiate sound waves outwards, so that sound is generated.

The magnetic circuit structure 21 comprises a central permanent magnet 211, two first permanent magnets 212 which are oppositely arranged and two second permanent magnets 213 which are oppositely arranged, the voice coil 22 is fixedly arranged below the vibrating diaphragm 24 and is partially inserted into a magnetic gap formed by the first permanent magnets 212, the central permanent magnet 211, the second permanent magnets 213 and the central permanent magnet 211, and the voice coil 22 receives Lorentz force action in the magnetic gap to drive the vibrating diaphragm 24 to vibrate and sound.

Optionally, the speaker assembly 20 may further include a magnetic conductive sheet 23 fixed at the bottom of the magnetic circuit structure 21, where the magnetic conductive sheet 23 is used as a paramagnetic material, and has the function of changing the direction of the magnetic field and converging the magnetic field on the magnetic circuit structure 21. In this embodiment, if there is no magnetic conductive sheet 23, the magnetic field generated by the magnetic circuit structure 21 will diffuse around, and cannot be concentrated near the magnetic circuit structure 21, that is, the magnetic field cannot be concentrated near the voice coil 22, and after the magnetic conductive sheet 23 is adopted, the magnetic field can be concentrated near the magnetic circuit structure 21 more, more specifically, at the voice coil 22, so as to enhance the lorentz force applied to the voice coil 22, thereby enhancing the driving effect of the voice coil 22 when vibrating and sounding the diaphragm 24.

The magnetic conductive sheet 23 has not only the function of converging the magnetic field of the magnetic circuit structure 21, but also the function of fixing the center permanent magnet 211, the two first permanent magnets 212, and the two second permanent magnets 213 together.

Optionally, the speaker assembly 20 may further include a connection piece 26 fixed on the top of the magnetic circuit structure 21, where the connection piece 26 has a ring-shaped structure, and a hollow portion is formed in the middle of the connection piece for passing through the voice coil 22, and the connection piece 26 is mainly used to fix the two first permanent magnets 212 and the two second permanent magnets 213 together.

Speaker assembly 20 is movably disposed within receiving cavity 13 in a variety of embodiments: the magnetic circuit structure 21 is elastically connected to the cavity wall of the accommodating cavity 13 through two elastic members, specifically, the magnetic circuit structure can be connected to the first permanent magnet 212 and the cavity wall of the accommodating cavity 13 through two elastic members, so that the whole speaker assembly 20 can swing left and right in the accommodating cavity 13; alternatively, the magnetic circuit structure 21 is slidably connected to the cavity wall of the accommodating cavity 13 through the guide assembly 40, so that the speaker assembly 20 as a whole can slide left and right in the accommodating cavity 13, as will be described in more detail in the following embodiments; alternatively, the magnetic conductive sheet 23 is slidably connected to the wall of the accommodating chamber 13 by the guide assembly 40, so that the entire speaker assembly 20 can slide left and right in the accommodating chamber 13, as will be described in more detail below.

The electromagnetic driving assembly 30 is fixedly arranged in the accommodating cavity 13, the electromagnetic driving assembly 30 mainly utilizes the magnetic effect of current, a magnetic field is generated around the electromagnetic driving assembly 30 after the current is introduced into the electromagnetic driving assembly 30, and then the magnetic field force generated by the electromagnetic driving assembly 30 is utilized to attract or repel the magnetic circuit structure 21, so that the purpose of driving the loudspeaker assembly 20 to reciprocate in the accommodating cavity 13 is achieved.

Fig. 6 is a schematic diagram of the speaker assembly 20 in fig. 5 when reciprocating in the accommodating cavity 13, as shown in fig. 6, in the speaker module 100 provided in the embodiment of the present application, after the electromagnetic driving assembly 30 is energized with the driving current that is alternately changed, the electromagnetic driving assembly 30 can attract or repel the magnetic circuit structure 21, so that the entire speaker assembly 20 rapidly reciprocates in the accommodating cavity 13 to drive the module housing 10 to form a vibration effect.

In the speaker module 100 in the embodiment of the present application, the electromagnetic driving assembly 30 is disposed around the speaker assembly 20, and the speaker assembly 20 is driven to reciprocate in the accommodating cavity 13 by the magnetic force generated by the electromagnetic driving assembly 30, so as to form a vibration effect similar to that of the vibration motor, so that the speaker and the two functional elements of the vibration motor can be combined into one, and compared with the layout space occupied by the speaker and the vibration motor which are separately provided, the layout space occupied by the speaker module 100 in the embodiment of the present application is relatively small, so that the speaker module 100 can be conveniently assembled inside the electronic device.

In addition, in the embodiment of the present application, the speaker module 100 with the vibration function is implemented by the whole speaker assembly 20 reciprocating in the accommodating cavity 13 when the vibration function is performed, so that the whole speaker assembly 20 forms a vibrating rotor, and compared with the vibrating motor in the related art, the mass of the vibrating rotor formed by the whole speaker assembly 20 is larger, so that the vibration inertia force of the speaker assembly 20 is larger when the speaker assembly reciprocates, the vibration feeling applied to the module housing 10 is stronger, and the user experience when feeling the vibration touch of the module is improved.

The electromagnetic driving assembly 30 includes a first electromagnetic coil 31, and a movable space is provided between the two sides of the magnetic circuit structure 21 and the module housing 10, and the movable space is used for the speaker assembly 20 to reciprocate, and meanwhile, the movable space also provides an installation position for the first electromagnetic coil 31.

Alternatively, one or more first electromagnetic coils 31 may be arranged only in the active space on either side, such as: a first electromagnetic coil 31 is located in the left movable space of the magnetic circuit structure 21, an elastic member is arranged in the right movable space, the elastic member connects the magnetic circuit structure 21 with the cavity wall of the accommodating cavity 13, and the elastic member can provide a restoring force of the magnetic circuit structure 21. When the first electromagnetic coil 31 is electrified, the loudspeaker assembly 20 is attracted towards the direction of the first electromagnetic coil 31 through the magnetic circuit structure 21, the elastic piece is stretched and deformed at the moment, when the first electromagnetic coil 31 is electrified with reverse current, the elastic piece is reset and pulls the loudspeaker assembly 20 back through the magnetic circuit structure 21, meanwhile, the first electromagnetic coil 31 also repels the loudspeaker assembly 20 towards the direction far away from the first electromagnetic coil 31, the elastic piece is compressed and deformed at the moment, and the like, after the first electromagnetic coil 31 is electrified with alternating driving current, the loudspeaker assembly 20 can reciprocate in the accommodating cavity 13.

In one embodiment provided in the present application, at least one first electromagnetic coil 31 is disposed in the active space on both sides of the magnetic circuit structure 21.

Fig. 7 is a cross-sectional view of another example of A-A in fig. 3. For example, as shown in fig. 7, a first electromagnetic coil 31 is disposed in the movable space on both sides of the magnetic circuit structure 21.

In this embodiment, the first electromagnetic coils 31 are uniformly distributed in the active spaces on two sides of the magnetic circuit structure 21, so that the first electromagnetic coils 31 on two sides attract and repel the magnetic circuit structure 21 at the same time, so that the magnetic circuit structure 21 is acted by the magnetic force of the first electromagnetic coils 31 on two sides at the same time, and further, the vibration command can be more rapidly corresponding. Compared with the case of arranging the first electromagnetic coil 31 on one side, the first electromagnetic coil 31 on both sides can make the magnetic force received by the magnetic circuit structure 21 stronger, and the speaker module 100 can respond to the vibration command more quickly.

Alternatively, in other embodiments, two, three or more first electromagnetic coils 31 may be disposed in the movable spaces on the left and right sides of the magnetic structure 21, which is not limited.

Alternatively, for convenience in fixedly mounting the first electromagnetic coil 31 in the accommodating chamber 13, the first electromagnetic coil 31 extends to the bottom of the second housing 12 and is fixed with the second housing 12 by bonding, welding, screw locking, or the like.

In order to enable the first electromagnetic coils 31 on both sides to generate relatively balanced magnetic field forces so that the speaker assembly 20 can reciprocate stably within the receiving cavity 13, deflection of the speaker assembly 20 to either side is avoided, in one embodiment provided herein, the first electromagnetic coils 31 on both sides of the magnetic structure 21 are arranged symmetrically to each other about the center line 50 of the module housing 10.

For example, as further shown in fig. 7, the two first electromagnetic coils 31 are arranged symmetrically with respect to each other about the center line 50 of the module case 10.

Fig. 8 is a cross-sectional view of another example of A-A in fig. 3.

In order to enhance the magnetic field strength of the first electromagnetic coil 31, as shown in fig. 8, in one embodiment provided in the present application, the electromagnetic driving assembly 30 further includes a first iron core 32 penetrating the inside of the first electromagnetic coil 31.

In this embodiment, the first iron core 32 not only can enhance the magnetic field strength of the first electromagnetic coil 31, but also can conveniently reinforce the first electromagnetic coil 31, so that the first electromagnetic coil 31 can be prevented from deflecting towards the magnetic circuit structure 21 under the action of the magnetic field force.

Alternatively, in the case where the first iron core 32 is present, the first electromagnetic coil 31 may not extend to the bottom of the second housing 12, so that the amount of the first electromagnetic coil 31 can be saved, thereby reducing the material cost.

Alternatively, the first core 32 may have a bar shape or a shoe shape.

Alternatively, the first core 32 may be made of silicon steel instead of soft iron material which demagnetizes faster. Such a first core 32 has magnetism when energized, and the magnetism disappears when de-energized.

Fig. 9 is a cross-sectional view of another example of A-A in fig. 3.

As shown in fig. 9, in one embodiment provided herein, the electromagnetic drive assembly 30 includes a second electromagnetic coil 33, and the second electromagnetic coil 33 is located at the bottom of the magnetic circuit structure 21 and adjacent to both side edges of the magnetic circuit structure 21.

The second electromagnetic coil 33 in this embodiment may also attract and repel the magnetic circuit structure 21 at the same time, so that the magnetic circuit structure 21 is acted by the magnetic force of the second electromagnetic coil 33 on both sides of the bottom at the same time, and further, the vibration command can be rapidly corresponding.

In order to enable the second electromagnetic coils 33 to generate relatively balanced magnetic field forces so that the speaker assembly 20 can reciprocate within the receiving cavity 13 in a stable manner, avoiding deflection of the speaker assembly 20 to either side, and as shown in fig. 9, in one embodiment provided herein, two second electromagnetic coils 33 are symmetrically disposed with respect to each other about the centerline 50 of the module housing 10.

Fig. 10 is a cross-sectional view of another example of A-A in fig. 3.

In order to enhance the magnetic field strength of the second electromagnetic coil 33, as shown in fig. 10, in one embodiment provided herein, the electromagnetic driving assembly 30 further includes a second iron core 34 penetrating the inside of the second electromagnetic coil 33.

In this embodiment, the second iron core 34 not only can enhance the magnetic field strength of the second electromagnetic coil 33, but also can conveniently reinforce the second electromagnetic coil 33, so that the second electromagnetic coil 33 can be prevented from deflecting towards the magnetic circuit structure 21 under the action of the magnetic field force.

Alternatively, the second core 34 may have a bar shape or a shoe shape.

Alternatively, the second core 34 may be made of silicon steel in addition to soft iron material that demagnetizes faster. Such a second core 34 is magnetic when energized, and the magnetic is lost when de-energized.

Further, in order to avoid magnetizing the second iron core 34 by the magnetic circuit structure 21 and to avoid affecting the reciprocating movement of the magnetic circuit structure 21 by the contact of the second iron core 34 with the magnetic circuit structure 21, in the above-described embodiment, the separation gap 341 is provided between the second iron core 34 and the magnetic circuit structure 21.

The separation gap 341 has mainly two roles; firstly, the magnetic circuit structure 21 is prevented from contacting the second iron core 34, and the second iron core 34 is prevented from being magnetized by the magnetic circuit structure 21, so that adverse effects on the magnetic field intensity generated by the second electromagnetic coil 33 are avoided; and secondly, the second iron core 34 is prevented from causing friction obstruction to the magnetic circuit structure 21 during reciprocating motion, so that the magnetic field force can fully convert the functions of the magnetic circuit structure 21 into the kinetic energy of the loudspeaker assembly 20, and the vibration amplitude of the loudspeaker assembly 20 is ensured.

It should be noted that, when the bottom of the magnetic circuit structure 21 has the magnetic conductive sheet 23, the separation gap 341 may also be located between the second iron core 34 and the magnetic conductive sheet 23.

Fig. 11 is a cross-sectional view of another example of A-A in fig. 3.

As shown in fig. 11, in one embodiment provided herein, the electromagnetic drive assembly 30 includes two first electromagnetic coils 31, a first iron core 32 penetrating the inside of the two first electromagnetic coils 31, two second electromagnetic coils 33, and a second iron core 34 penetrating the inside of the two second electromagnetic coils 33.

In this embodiment, the first electromagnetic coil 31, the first iron core 32, the second electromagnetic coil 33 and the second iron core 34 jointly form the electromagnetic driving assembly 30, so that the magnetic force of the electromagnetic driving assembly 30 can be improved, the magnetic circuit structure 21 can respond to the magnetic force generated by the electromagnetic driving assembly 30 more quickly, and the sensitivity of the speaker assembly 20 in reciprocating motion in the accommodating cavity 13 can be improved.

Fig. 12 is a schematic diagram of the magnetic circuit structure 21, the first electromagnetic coil 31, and the second electromagnetic coil 33 provided in the embodiment of the present application.

As shown in fig. 12, in one embodiment provided herein, the electromagnetic drive assembly 30 includes two first electromagnetic coils 31 and two second electromagnetic coils 33.

Fig. 13 is a cross-sectional view of B-B of fig. 12. Fig. 13 (a) is a schematic diagram of the magnetic circuit structure 21 moving to the right; fig. 13 (b) is a schematic view of the magnetic circuit structure 21 when it moves to the left.

In this application, the speaker module 100 may also have a driving mode different from that of the foregoing embodiment, where the first left electromagnetic coil 31 and the second left electromagnetic coil 33 are a set, the first right electromagnetic coil 31 and the second right electromagnetic coil 33 are a set, and the two sets of electromagnetic coils are powered on and powered off respectively to drive the magnetic circuit structure 21.

For example, as shown in (a) of fig. 13, when the first electromagnetic coil 31 and the second electromagnetic coil 33 on the right side are in the deenergized state, the first electromagnetic coil 31 and the second electromagnetic coil 33 on the left side exhibit repulsive magnetic field forces F1 and F2 after being energized, and the magnetic circuit structure 21 moves to the right side; as shown in (b) of fig. 13, when the first electromagnetic coil 31 and the second electromagnetic coil 33 on the left side are in the deenergized state, the first electromagnetic coil 31 and the second electromagnetic coil 33 on the right side exhibit repulsive magnetic field forces F1 and F2 after being energized, and the magnetic circuit structure 21 moves to the left side. And so on, the speaker assembly 20 can be driven to reciprocate by the magnetic circuit structure 21 by continuously powering on and off.

Alternatively, the speaker assembly 20 may be driven to reciprocate by varying the winding direction of the two first electromagnetic coils 31 and the two second electromagnetic coils 33 by alternately generating attractive magnetic field forces, and the driving mode is similar to that described above.

As described above, the magnetic circuit structure 21 is slidably coupled to the chamber wall of the housing chamber 13 by the guide assembly 40, so that the entire speaker assembly 20 can slide left and right in the housing chamber 13. Further, as previously described, the first permanent magnet 212 is used to set the guide assembly 40 and the second permanent magnet 213 is used to be attracted or repelled by the electromagnetic drive assembly 30.

Fig. 14 is a schematic view of an example of a guide assembly 40 according to an embodiment of the present application.

As shown in fig. 14, in one embodiment provided herein, the guide assembly 40 includes a guide shaft 41 and a shaft hole 42, the guide shaft 41 is fixed to the cavity wall of the accommodating cavity 13, the shaft hole 42 is provided on the magnetic circuit structure 21, more specifically, on the first permanent magnet 212, and the first permanent magnet 212 is slidably connected along the guide shaft 41 through the shaft hole 42.

The installation bases of the guide shaft 41 and the shaft hole 42 may be interchanged.

Fig. 15 is a schematic view of another example of a guide assembly 40 provided in an embodiment of the present application.

As shown in fig. 15, in one embodiment provided herein, the guide shaft 41 is fixed to the magnetic circuit structure 21, more specifically, to both end faces of the first permanent magnet 212, the shaft holes 42 are provided on the cavity walls of the accommodation cavity 13 at both ends of the first permanent magnet 212, and the first permanent magnet 212 is slidable within the shaft holes 42 by the guide shaft 41.

Alternatively, the shaft hole 42 provided in the cavity wall of the accommodating cavity 13 may be formed by various embodiments: a shaft sleeve 45 or a linear bearing is fixed on the cavity wall of the accommodating cavity 13, and the shaft sleeve 45 or the linear bearing is provided with a shaft hole 42 for penetrating the guide shaft 41; the other is that a boss is formed on the cavity wall of the accommodating cavity 13 in an extending manner, and a shaft hole 42 is formed on the boss.

Optionally, the gap between the guide shaft 41 and the shaft hole 42 may be filled with lubricating oil, so that friction resistance when the guide shaft 41 slides in the shaft hole 42 can be reduced, so that the function of the magnetic field force on the magnetic circuit structure 21 can be fully converted into kinetic energy of the speaker assembly 20, energy loss is reduced, and vibration amplitude of the speaker assembly 20 is ensured.

Alternatively, the outer wall of the guide shaft 41 and/or the wall of the shaft hole 42 are coated with a self-lubricating material, so that the frictional resistance when the guide shaft 41 slides in the shaft hole 42 can be reduced.

Specifically, engineering plastics such as polytetrafluoroethylene, polyacetal, polyoxymethylene, polycarbonate, polyamide, etc. may be used as the self-lubricating material; electroplated alloy layers may also be employed.

Fig. 16 is a schematic view of another example of a guide assembly 40 provided in an embodiment of the present application.

As shown in fig. 16, in one embodiment provided herein, the guide assembly 40 includes a slider 43 and a chute 44, the slider 43 being fixed on the cavity wall of the housing cavity 13, the chute 44 being provided on the magnetic circuit structure 21, more specifically on the first permanent magnet 212, the first permanent magnet 212 being slidable along the slider 43 through the chute 44.

In addition, the installation base of the slider 43 and the chute 44 may be exchanged.

In one embodiment provided herein, the slider 43 is fixed on the magnetic circuit structure 21, more specifically on the first permanent magnet 212, the chute 44 is provided on the cavity wall of the housing cavity 13, and the first permanent magnet 212 is slidable along the chute 44 by the slider 43.

Optionally, the gap between the sliding block 43 and the sliding groove 44 may be filled with lubricating oil, so that the friction resistance of the sliding block 43 during sliding in the sliding groove 44 can be reduced, so that the function of the magnetic field force on the magnetic circuit structure 21 can be fully converted into the kinetic energy of the speaker assembly 20, the energy loss is reduced, and the vibration amplitude of the speaker assembly 20 is ensured.

Optionally, the outer wall of the sliding block 43 and/or the groove wall of the sliding groove 44 are coated with a self-lubricating material, so that the friction resistance of the sliding block 43 when sliding in the sliding groove 44 can be reduced.

As described above, the magnetic conductive sheet 23 can be slidably attached to the wall of the housing chamber 13 by the guide member 40, so that the entire speaker assembly 20 can slide left and right in the housing chamber 13.

In one embodiment provided herein, the guide shaft 41 is fixed to the wall of the housing chamber 13, and the shaft hole 42 is provided on the magnetic conductive sheet 23.

The setting bases of the guide shaft 41 and the shaft hole 42 may also be interchanged, i.e., in one embodiment provided in the present application, the guide shaft 41 is fixed to the magnetic sheet 23, and the shaft hole 42 is provided in the cavity wall of the accommodation cavity 13.

Fig. 17 is a schematic view of another example of a guide assembly 40 provided in an embodiment of the present application.

As shown in fig. 17, in one embodiment provided in the present application, the slider 43 is fixed to the magnetic conductive sheet 23, the slide groove 44 is provided on the cavity wall of the accommodating cavity 13, and the magnetic conductive sheet 23 is slidable along the slide groove 44 by the slider 43.

It is also possible to interchange the setting base of the slide 43 and the slide 44, i.e. in one embodiment provided in the present application the slide 43 is fixed to the cavity wall of the receiving cavity 13, the slide 44 is arranged on the magnet-conducting sheet 23, and the magnet-conducting sheet 23 is slidable along the slide 43 via the slide 44.

In one embodiment provided herein, the voice coil 22, the two first electromagnetic coils 31, and the two second electromagnetic coils 33 are all disposed on a flexible circuit board (not shown) that extends through the module housing 10.

In this embodiment, the voice coil 22 and the electromagnetic coil are integrated on a flexible circuit board, so that the layout space occupied by the circuit can be reduced, and the layout space occupied by the speaker module 100 can be further reduced.

Alternatively, a flexible circuit board may extend through the first housing 11 or the second housing 12 for electrical connection with the control element of the smart phone.

Finally, it should be noted that: the foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (18)

1. A speaker module, comprising:

a module housing (10) having a housing chamber (13) therein;

a speaker assembly (20) movably disposed within the housing cavity (13), the speaker assembly (20) including a magnetic circuit structure (21);

The electromagnetic driving assembly (30) is arranged in the accommodating cavity (13), and the electromagnetic driving assembly (30) is used for attracting or repelling the magnetic circuit structure (21) so as to drive the loudspeaker assembly (20) to reciprocate in the accommodating cavity (13) through the magnetic circuit structure (21).

2. Loudspeaker module according to claim 1, wherein the electromagnetic drive assembly (30) comprises a first electromagnetic coil (31), wherein a movable space is provided between the two sides of the magnetic circuit structure (21) and the module housing (10), and wherein at least one first electromagnetic coil (31) is arranged in the movable space.

3. Loudspeaker module according to claim 2, wherein at least one of the first electromagnetic coils (31) is arranged in the active space on both sides of the magnetic structure (21), respectively.

4. A loudspeaker module according to claim 2 or 3, wherein the electromagnetic drive assembly (30) further comprises a first core (32) penetrating inside the first electromagnetic coil (31).

5. A loudspeaker module according to any one of claims 1-3, characterized in that the loudspeaker assembly (20) is slidably connected with the chamber wall of the receiving chamber (13) in the direction of the reciprocating movement by means of a guide assembly (40).

6. The speaker module according to claim 5, wherein the guide member (40) includes a guide shaft (41) and a shaft hole (42), the guide shaft (41) being fixed to one of the speaker member (20) and a chamber wall of the housing chamber (13), the other of the two being provided with the shaft hole (42).

7. A loudspeaker module according to claim 6, wherein the guide shaft (41) is fixed to one of the magnetic circuit structure (21) and the chamber wall of the receiving chamber (13), the other of which is provided with the shaft hole (42).

8. The speaker module according to claim 6, wherein the speaker assembly (20) further includes a magnetically conductive sheet (23) fixed to the magnetic circuit structure (21), the magnetically conductive sheet (23) and one of the chamber walls of the housing chamber (13) being fixed to the guide shaft (41), the other of the two being provided with the shaft hole (42).

9. The speaker module according to claim 5, wherein the guide assembly (40) comprises a slider (43) and a chute (44), the slider (43) being fixed to one of the speaker assembly (20) and a wall of the receiving cavity (13), the other of the two being provided with the chute (44).

10. Loudspeaker module according to claim 9, wherein the slider (43) is fixed to one of the magnetic structure (21) and the cavity wall of the receiving cavity (13), the other of which is provided with the chute (44).

11. The speaker module according to claim 9, wherein the speaker assembly (20) further comprises a magnetically conductive sheet (23) fixed to the magnetic circuit structure (21), one of the magnetically conductive sheet (23) and a cavity wall of the housing cavity (13) being fixed with the slider (43), the other of the magnetically conductive sheet and the cavity wall being provided with the slide groove (44).

12. Loudspeaker module according to any of claims 6-11, wherein the magnetic circuit structure (21) comprises a central permanent magnet (211), two oppositely arranged first permanent magnets (212) and two oppositely arranged second permanent magnets (213), the first permanent magnets (212) being used for arranging the guiding assembly (40), the second permanent magnets (213) being used for being attracted or repelled by the electromagnetic drive assembly (30).

13. A loudspeaker module according to any one of claims 1-3, 6-11, wherein the electromagnetic drive assembly (30) comprises a second electromagnetic coil (33), a plurality of the second electromagnetic coils (33) being located at the bottom of the magnetic structure (21) and adjacent to both side edges of the magnetic structure (21).

14. The speaker module according to claim 13, wherein the electromagnetic drive assembly (30) further comprises a second core (34) penetrating inside the second electromagnetic coil (33), the second core (34) and the magnetic structure (21) having a separation gap (341) therebetween.

15. The speaker module according to claim 14, wherein a plurality of the second electromagnetic coils (33) are arranged symmetrically to each other about a center line (50) of the module housing (10).

16. The speaker module according to any one of claims 1-3, 6-11, 14-15, wherein the speaker assembly (20) further comprises a voice coil (22), the voice coil (22) and the electromagnetic drive assembly (30) being provided on a flexible circuit board extending through the module housing (10).

17. A loudspeaker module according to claim 3, wherein the first electromagnetic coils (31) on both sides of the magnetic circuit structure (21) are arranged symmetrically to each other about a centre line (50) of the module housing (10).

18. An electronic device comprising a housing (200) and a speaker module (100) according to any of claims 1-17, the speaker module (100) being arranged within the housing (200).